stress

(stres)In medicine,
the body???s response to physical, mental, or emotional
pressure. Stress causes chemical changes in the body that
can raise blood pressure, heart rate, and blood sugar
levels. It may also lead to feelings of frustration,
anxiety, anger, or depression. Stress can be caused by
normal life activities or by an event, such as trauma or
illness. Long-term stress or high levels of stress may lead
to mental and physical health problems.